Tissue response evaluation of the mucosa of the tympanic cavity of guinea pigs, when receiving biodegradable implant.
Acta Cir Bras
; 29 Suppl 1: 12-8, 2014.
Article
em En
| MEDLINE
| ID: mdl-25185050
ABSTRACT
PURPOSE:
To evaluate the tissue response of the mucosa of the tympanic cavity of guinea pigs, when receiving biodegradable implant.METHODS:
A total of 20 male guinea pigs were divided into 2 groups. After paracentesis in both ears, a biodegradable polymer of poly lactic-co-glycolic acid was implanted in only one middle ear. Histological analysis using neutrophil exudate and vascular neoformation (acute inflammation) and fibroblast proliferation and mononuclear inflammatory cells (chronic inflammation) as parameters was performed after 10 and 30 days of survival (groups 1 and 2, respectively).RESULTS:
Four ears in group 1 and 7 in group 2 had an increase of neutrophil exudate. Vascular neoformation occurred in ears with or without the implant, in both groups. Fibroblast proliferation and mononuclear inflammatory cells (lymphocytes and macrophages) increased in ears with implant in group 2.CONCLUSION:
The tissue response by histological analysis of the mucosa of the tympanic cavity of guinea pigs, when receiving biodegradable implant, showed no statistically significant difference between ears with or without the implant.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Ácido Tióctico
/
Implantes Absorvíveis
/
Orelha Média
/
Lactatos
Tipo de estudo:
Evaluation_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article